Soak her. Just get a small plastic tub with a lid like a little Rubbermaid or Sterilite. Then put enough lukewarm water in it almost cover the snake but not so deep it has to try and tread water or it might drown. Then put the lid on with a few air holes and let her sit in there for about 15-30 mins. Then with a damp paper towel or wet washcloth, just let the snake crawl through it while you wrap it around her. I do this when my snakes get funky smelling from eating rats and stuff except I don't use a tub, I just wet a paper towel and wrap it around them and pull it down them.
Also once your snake comes out of blue, that is when you the humidity boost will really help. Try and keep it up around 70-80%. You can also move the water bowl over part of the heat for evaporation. Looks like you got the top covered with tin foil so that is good.